The phrase "an array of smart" is not complete and lacks context, but it is grammatically correct and can be used in written English.
You can use it when describing a variety of intelligent or clever items, people, or concepts, typically in a more abstract or figurative sense.
Example: "The conference featured an array of smart technologies that are revolutionizing the industry."
Alternatives: "a variety of intelligent" or "a range of clever".
People whipped out an array of smart phones to lodge complaints with the election commission and describe their travails on Twitter.
With vehicle-to-grid technology, controlled by an array of smart meters, car owners plugged in at home or work could allow the grid to draw off unused chunks of power at times when short-term demand is high.
It became the tagline for I.B.M.'s highly successful campaign to sell software and services — and sometimes hardware, too — to corporations and governments for an array of "smart" projects.
To that end, Harms envisions an array of "smart" appliances an oven that knows just what temperature to heat to in order to bake that filet of salmon, for instance.
Located on the Gendarmenmarkt square next to the Konzerthaus and close to an array of smart bars and restaurants, including the Newton Bar and Borchardts, one renowned travel guide called it one of the best places to stay in the world.
In addition we develop an array of "smart surgical tools" that uses fiber optic OCT distal sensors to ensure safe and precise surgical maneuvers.
At the peak of its popularity in 2007, Willcom had won over business users with an array of smart-phone models, like its W-Zero series, the first in Japan to use a Windows operating system.
Excellent controls, brilliant structure, an array of weapons, smart enemies, a cogent, engrossing universe, Bungie's game was revolutionary.
The proposed monitoring method uses WiAMS devices and an array of embedded "smart aggregates" and externally bonded piezoelectric transducers.
Unusually, he was sat to one side with an array of folders, smart boards & data.
The researchers are using Lake George as a test bed for an array of sophisticated "smart" sensors that will monitor 25 different variables, including biological characteristics and water chemistry and quality.
